Interpreting single jet measurements in Pb plus Pb collisions at the LHC

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10335382" target="_blank" >RIV/00216208:11320/16:10335382 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1140/epjc/s10052-016-3896-0" target="_blank" >http://dx.doi.org/10.1140/epjc/s10052-016-3896-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-016-3896-0" target="_blank" >10.1140/epjc/s10052-016-3896-0</a>

Result language

angličtina

Original language name

Interpreting single jet measurements in Pb plus Pb collisions at the LHC

Original language description

Results are presented from a phenomenological analysis of recent measurements of jet suppression and modifications of jet fragmentation functions in Pb+Pb collisions at the LHC. Particular emphasis is placed on the impact of the differences between quark and gluon jet quenching on the transverse momentum (p(T)(jet)) dependence of the jet R-AA and on the fragmentation functions, D(z). Primordial quark and gluon parton distributions were obtained from PYTHIA8 and were parameterized using simple power-law functions and extensions to the power-law function which were found to better describe the PYTHIA8 parton spectra. Asimple model for the quark energy loss based on the shift formalism is used to model R-AA and D(z) using both analytic results and using direct Monte-Carlo sampling of the PYTHIA parton spectra. The model is capable of describing the full p(T)(jet), rapidity, and centrality dependence of the measured jet R-AA using three effective parameters. A key result from the analysis is that the D(z) modifications observed in the data, excluding the enhancement at low-z, may result primarily from the different quenching of the quarks and gluons. The model is also capable of reproducing the charged hadron R-AA at high transverse momentum. Predictions are made for the jet R-AA at large rapidities where it has not yet been measured and for the rapidity dependence of D(z).

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Physical Journal C

ISSN

1434-6044

e-ISSN

—

Volume of the periodical

76

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

19

Pages from-to

—

UT code for WoS article

000369010200005

EID of the result in the Scopus database

2-s2.0-84955580923